The resistance of concrete pumped through pipelines
作者： A. N. Ede
DOI: 10.1680/MACR.1957.9.27.129
关键词:
摘要: The lack of adequate data made necessary the investigation of the basic mechanics of concrete pumping. Unsaturated materials pass stresses by inter-particle contact and give rise on commencement of movement to a pressure build-up which in a non-tapering duct is exponential with distance pumped. Adequate saturation by water/cement paste reduces the resistance to a favourable linear type, subject to increase with velocity, but independent of operating pressure.
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